TY - JFULL
AU - Weiwei Shan and Wenjing Ding and Juan Ning and Chao He and Zijuan Wang
PY - 2017/10/
TI - Study on Liquid Nitrogen Gravity Circulation Loop for Cryopumps in Large Space Simulator
T2 - International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering
SP - 1593
EP - 1599
EM - sww_xjtu@163.com
VL - 11
SN - 1307-6892
UR - http://waset.org/publications/10008017
PU - World Academy of Science, Engineering and Technology
NX - International Science Index 129, 2017
N2 - Gravity circulation loop for the cryopumps of the space simulator is introduced, and two phase mathematic model of flow heat transfer is analyzed as well. Based on this model, the liquid nitrogen (LN2) gravity circulation loop including its equipment and layout is designed and has served as LN2 feeding system for cryopumps in one large space simulator. With the help of control software and human machine interface, this system can be operated flexibly, simply, and automatically under four conditions. When running this system, the results show that the cryopumps can be cooled down and maintained under the required temperature, 120 K.
ER -